<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 实现最简单的浅拷贝
        let  user = {name:'张三',age:18}
        let User ={
            name:user.name
        }
        User.name='我牛逼起来了'
        console.log(User.name);
        console.log(user.name);
    </script>
</body>
</html>